How many points have these guys lost through mechanical issues or team cock ups through strategy?

Baring in mind that Alonso has a 90 point advantage and Vettel has 100 they would not need to have many points recouped and still keep a healthy lead over Lewis in the championship if his "lost" points were installed.

Valencia 25 points ... leading with an alternator failureAbu Dhabi 10 points ... if he started where he had qualified without the fuel issue he would have been second into the first corner, hamilton went out, giving vettel the win

Just off the top of my head, dont feel like looking through the past races in detail.